Error 0 = ldap_set_option(hLdap, LDAP_OPT_PROTOCOL_VERSION, 3); Error 81 = ldap_connect(hLdap, NULL); Server error: <empty>

Error message: Failed to connect to KDC - Failed to communicate with the Active Directory at ldaps://WIN-OS1DFHISDK5.testing.com:636: simple bind failed: WIN-OS1DFHISDK5.testing.com:636 Update the KDC settings in krb5-conf and kerberos-env configurations to correct this issue.